.codelist {
  background: #EEEEEE;
  display: flex;
  flex-direction: column;
  padding: 16px;
  height: 500px;
  overflow-y: scroll
}

.listItem {
  border-bottom: 1px dotted #ccc;
  padding: 10px;
  color: #000000;
  cursor: pointer;
}

.listItem:hover {
  padding: 10px;
  background: #1890FF;
  color: #fff;
  border-bottom: 1px dotted #ccc;
}

